Machine for washing dishes.



T. E. MURRAY. MACHINE FOR WASHING DISHES.

APPLICATION FILED OCT. I9. I914.

1,156,424. Patented 001.1%1915.

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MACHINE FOR WASHING DISHES.

APPLICATION FILED OCT. 19. 19M.

Patented Oct. 12, 1915.

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MACHINE FOR WASHING DISHES.

APPLICATION FILED OCT. 19. 1914.

1,156,424.. Patented 001;. 12, 1915.

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UNITED STATES PATENT OFFICE. I

'rrromas EQMURRAY, or NEW roux, N. Y.

MACHINE FOR WASHING DISHES.

To all whom it may concern:

Be it known that I, THOMAS E. MURRAY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Machines for Washing Dishes, of which the following is a specification.

The invention is a machine for washing dishes. I

- It comprises a tank in which is a rotary horizontal table covered with foraminated, reticulated or perforated material upon which the dishes are placed and which receives the discharge of washingliquid on its upper and under surfaces, so that both sides of the dishes on the table are sub-jected to the action of said liquid. The liquid is proand through the perforations thereof by means of a rotary heater or impeller enter ing said liquid in the bottom of the tank. A second impeller forces said liquid also through a pipe which is bent over to deliver upon the upper surface of said table. The impellers are driven by a suitable motor which also actuates the rotating table, a speed reducing gear being interposed between motor and table to insure that said table shall have a travel sufiiciently slow to permit of the thorough cleansing of the dishes. The tank is divided into two com partments by a partition extending upwardly for a short distance from the bottom. Into one of these compartments water is admitted, and said water passes into the other compartment when a valve in said partition angularly disposed curtains, the inner ver' tical edges of which meet, and the outer vertical edges of which make contact with the wall of the tank on'each side of sa d openmg. I

In the accompanying drawings-Figure 1 is a perspective view of my dish-washer, a portion of the wall being broken away to Specification of Letters Patent.

show internal construction. Fig. 2 is a vertical section of the tank. Fig. 3 is a plan now, the tank cover being removed and a portion of the dish-receiving table being Patented Oct. 12, 1915. Application filed October 19, 1914. 7 Serial No. 867,291.

broken away. Fig. 4 illustrates the mode of I.

interweaving the rubber bands on which the dishes rest with the wire netting of the dishreceiving table. line w, m of Fig. 2 showing one of the impellers in elevation. Y

Similar letters and numbers of reference indicate like parts. y

1 is a circular tank, provided with a cover 2, supporting legs 3 and having in its wall an opening 4: for the introduction'and removal of the dishes, in front of which openmg there is a receiving tray or platform 5. Pivoted on the inner wall of the tank are a number of roller disks 6, upon which rests the annular dish-supporting table 7 Said table is formed of two concentric rings 8, 9, the ring 8 being secured to a large tubular hub 10 and the ring 9 restingupon the roller disks 6 and being connected to ring 8 by radial spider arms, one of which is shown at 11, Flg. 2. Between the rings at their upper, edges is stretched wire-netting 12 which when the table is in lace is on the same level as the tray or platform 5.

Surrounding the outer ring 9 and secured thereto is a ring 13 having rack teeth on its lower edge which engage with a pinion 14. Said pinion is carried by a sleeve which receives the pivot pin of one of the roller disks 6 and extends through the wall of the case, outside of which it terminates in an enlarged portion which carries a pinion l5. Pinion 15'-engages with a pinion l6, integral with which is a larger pinion l7. Pinions l6 and 17 are loose on the shaft 18 of an electric motor 19. Pinion 17 engages with a pinion 20, integral with which is a larger pinion 21,

Fig. '5 is a section on the and pinions 20, 21 may be loose upon the casing. Pinion 21 engages with a smaller pinion 23* which is fast on the motor shaft '18. It will be obvious'that by means of the above-described gear train motion is communicated from the motor to the dish1'7e ceivingtable 7, causing the same to rotate in a horiz'ontal'plane at a speed much less than. the speed of revolution .of the motor.

The precise relation of speed of travel of the table 7 to the speed of rotation of the motor is not material solong as the speed of travel of the table be made such as to cause- I the dishes to be subjected to the action of the these heaters and 28 at the bottom, extend upwardly and are the tank wall. Said shaft carriesfour beaters or impellers 25, 26, 27, 28, one of which is shown in elevation in Fig. 5. Two of are placed directly below the table 7, and two, 26 and 27, are placed "in pipes 29 and 30which are closed turned over and flared at their extremities so as to deliver liquid raised by the impellers I as .directly upon the table 7. The shaft 18 pames through the walls of pipes 29, 30, and

n one shaft opening in each pipe, as shown at 31, Fig.2, sufiicient clearance is provided to permit the-washing liquid in the tank to flow freely into said pipes. i

' Extending diametrally. across the tank at its bottom-is a partition 32 which divides the lower portion of the tank into two com- ;partments A and B. In said partition is an opening 33. A rod 34 sliding in the cover has at its end a bifurcated valve 35, which valve when the rod is de ressed, as shown in Fig. 2, receives the partition 32 between its arms and closes the'opening 33, so preventpipe 29. In this way,

ruse-424 der or material for acting upon the grease on the dishes. The inlet valve 36 is opened to permit hot water to enter compartment B. The rod 34 being lifted, the Water flows through opening 33 in partition 32 into compartment A, to dissolve the powder therein.

concave side downward. As each dish in.

turn passes under the curtain 38 and enters compartment A, it receives on its under side the solution projected upwardly through the wlre-netting 12' by impeller 25, and on'its upper side the downward discharge of the same solution forced by impeller 26 through from adherent matter. The rotating table then carries the dish into compartment B,

mg mixing of thewashing liquids placed in the tank in compartments A and B. By raising the rod 34, the aperture 33 is opened to permit water introduced into compartment B vby the perforated inlet'pipe 36 to mg n war pipe 3 the flow to compartment'A The depth of washing liquid in the tankis determined by turnthe inner end of the overflow liquid level being thus regulated so as to be lower than the top of partition 32. Secured to the under side of the cover are two curtains 38, 39, of canvas or rubber c ot opening 4 in the tank wall. The inner vertical edges of these curtains meet about over thepartition 32: the outer edges meet the tam: wall on each side of the opening. With the wire-netting of table 7 are interwoven strips 40 of rubber. The motor and reducing gear may be inclosed in a suitable casing 41, as shown at Fig. 1. In order to remove all of-the liquid from the tank, a drainage pipe 42 is provided. The inlet,"outlet and dramage pipes are all provided. with valves. 7 7

The operation is as follows: In compartment is placed any suitable washing powplaced at an angle subtending the.

where it receives hot rinsing water delivered on its upper side from pipe 30, and'on "its lower side by impeller 28, which completes the washing and removes the washing powder solution from the 'dish. Finally the rotation of the table carries curtain 39 and min front of the opening 4 in the tank'wall, throughwhich itis removed by'the operator. 7 The curtains 38, 39 prevent any splashing of the washing liquid out of the tank or escape of steam from the hot water, while at the same time yield freely to permit the dishes to enter and leave the tank. The rub- *ber strips 40 form an elastic surface for the tank, a rotary horizontal perforated table.

suitable dishes to rest' upon which frictionally engages with them and so ment and breakage by contact. When the washing liquid becomes too much charged with matter removed from the dishes, the

' valve in drainage pipe 42 is opened to empty the tank, which may then. be washed out clean with fresh water, before the operation is started anew, as already explained.

I claim:

1. A dish-washing machine, comprising a for-dishes to be washed disposed in said tank, a pipe extending fromthe bottom of said tank and having its delivery opening directly above said table, a motor shaft entel-ing said tank, and two impellers on said shaft, one of said impellers being disposed below said table to project liquid upwardly thereon, and the other of said impellers being disposed in saidpipe to force liquid through said pipe. 1

21 A dish-washing machine, comprising a tank, a motor shaft entering the same, a rotary horizontal perforated table for dishes prevents displacethe Washing the dish under lot to be washed disposed in said tank and driven by said shaft, impellers on said shaft, and a pipe inclosing ondibie aid impellers and having its delivery op ing directly above said table.

3. A dish-washing machine, comprising a tank, a 'motor shaft entering the same, ia rotary horizontal perforated table for dishes to be washed disposed in said tank, speed reducinggear 'between said shaft and said table, and means actuated by said shaft for prlgljecting liquid upon opposite sides of said .ta e.

4. A dish-washing machine, comprising a i5 tank, a rotaryperforated table therein for dishes to be washed, a partition dividing the lower portion of said tank into two compartments, a, valve in said partition, an inlet inone of said compartments and an outlet in the other of saidcompartments whereby said :0 liquid is caused to pass successively through said compartments, and means ineach of compartments for projecting ,washing liquid upon opposite sides of said table.

In testimony whereof I have aflixed my 25 signature in presence of two witnesses.

THOMAS E. MURRAY.. Witnesses: GERTRUDE P. PORTER, MAY T. McGAmuEs 

